My Dream App, the Mac competition searching for the next killer app, announced its three winners today.

After a close race to the finish, three ideas emerged on top garnering the most support from the public: Atmosphere, a dynamic desktop representing the weather by Cameron Westland, Portal, a file sychronization utility with wormhole visualizations by Farzad Sadjadi, and Cookbook, a full featured recipe and meal management application by Michael Yuan. The three winners will have their ideas realized as Macintosh shareware applications, receive a free Macbook, and earn royalties on future sales.

More than 40,000 people cast votes over the contest’s five rounds, guided by judge commentary from celebrity judges including Apple co-founder Steve Wozniak, New York Times tech columnist David Pogue, This Week in Tech host Leo Laporte and Microsoft executive J Allard. Voters also received over $1,000,000 worth of free software from the contest’s organizers.